Download and install the latest version of Filestar.
Right click on one or more Mkv file(s) on your desktop and select Convert with Filestar.
Type convert to avif in the search box.
Press Convert.
Or let an AI agent do it: filestarcli -i file.mkv -c "convert to avif" (how).
Documents - File Explorer─☐✕
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.ffv1Contract.ffv1
.xlsxBudget.xlsx
.pdfReport.pdf
.pngLogo.png
Filestar*Help✕
Drop files here to get started
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Let your AI agent convert FFV1 (Lossless Video) to AVIF
Claude Code, Codex, Cursor and other agents can do this on your computer with Filestar. Your files stay on your machine.
Install Filestar and add it to your agents:
npm install -g filestar
filestarcli agent install
Then ask your agent:
“Convert the FFV1 (Lossless Video) files in my Downloads folder to AVIF”
Or run it yourself:
filestarcli -i file.mkv -c "convert to avif"
Runs on your computer, so your files stay on it. Works on Windows, macOS and Linux. 50 free conversions with the npm install, no account needed.
Can my AI agent convert FFV1 (Lossless Video) to AVIF?
Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i file.mkv -c "convert to avif" on your computer, so your files stay on it.
It is an image compression codec file with the same quality as .jpeg, but that is ten smaller. It supports HDR (High Dynamic Range). SDR (Standard Dynamic Range), and WCG (Wide Color Gamut) images. Also, it contains both the image sequences and image items. The only pitfall is that a few applications support it.
